Over 2 million years, the pre-human and human body has been designed to get all the nutrients it needs from eating nutritious food, not popping pills. In the modern world, anyone can get enough nutritious food to consume, if they have any semblance of intelligence.
If you eat crap all the time, taking vitamin pills is not going to keep you healthy.
Was our longevity better than other mammals over that period? Were we generally healthy or did the healthiest survive while the less fortunate perished, lame and hungry?
Supplements are what they are..... supplements. They don’t replace healthy foods.